Monolithic Power Systems Inc. EV6003-N-00A

Overview

EV6003-N-00A from Monolithic Power Systems is an evaluation board for the MP6003 monolithic flyback/forward DC-DC converter IC, integrating a 150V power switch and delivering up to 5W output at 5V/0.8A. It supports input voltages from 24V to 120V and features internal soft-start, cycle-by-cycle current limiting, and over-voltage, over-current, short-circuit, and thermal protection. Used for rapid validation of isolated 5V PoE-powered subsystems.

For engineers reviewing the EV6003-N-00A datasheet, EV6003-N-00A pinout, EV6003-N-00A application, or EV6003-N-00A equivalent, this board enables functional verification of MP6003-based flyback/forward topologies under real-world line and load conditions - including zero-load regulation via cycle skipping, UVLO behavior, and protection response timing.

Technical Context

The EV6003-N-00A implements a transformer-isolated flyback/forward topology using the MP6003 controller in an 8-pin SOIC-EP package. It incorporates a 100V startup circuit, line-feed-forward duty-cycle limiting, and auto-retry fault recovery with internal 150V MOSFET switching.

Board-level design includes a Wurth WE-750313291 custom transformer, PC357NT photocoupler for secondary-side feedback, ZR431LF01TA shunt regulator, and B240A-13-F Schottky output rectifier - enabling stable 5V regulation across 24–120V input with ≤1% output voltage deviation at full load.

Key Specifications

Availability

EV6003-N-00A is available at Aetrix Electronics and suitable for telecom equipment validation, VoIP phone power subsystem development, and distributed PoE-powered device prototyping requiring stable component supply and documented reference performance.

Supply support for EV6003-N-00A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless analog and mixed-signal semiconductor company specializing in high-efficiency power management ICs, with core expertise in DC-DC conversion, LED drivers, and motor control solutions.

The MP6003 product line targets isolated offline AC/DC and DC/DC conversion in space-constrained applications, emphasizing integrated high-voltage switching, robust protection, and minimal external component count for flyback and forward topologies.

FAQ

What input voltage range does the EV6003-N-00A support?

The board operates from 24 V to 120 V DC input, matching the MP6003's integrated 100 V startup circuit and 150 V power switch rating. This range covers standard PoE++ (up to 57 V), telecom -48 V systems with boost, and industrial 110 V DC rails - verified per Rev. 1.1 schematic and test data.

Does the EV6003-N-00A support both flyback and forward topologies out-of-the-box?

No - it is configured as a flyback converter by default using the WE-750313291 transformer and associated feedback network. Forward mode requires reconfiguration of transformer connections, snubber components, and gate drive layout per MP6003 datasheet Section 8.2; no forward-specific parts are populated on the board.

How is output voltage regulation achieved on this board?

Regulation uses secondary-side feedback: the ZR431LF01TA shunt regulator compares output voltage against its 1.24 V reference, drives the PC357NT optocoupler LED, and the primary-side MP6003 adjusts duty cycle based on phototransistor current - achieving ±1% 5 V accuracy across line and load per test report Figure 6.

Can the EN pin be used for remote on/off control?

Yes - the EN pin accepts TTL-compatible logic: drive ≥2.5 V to enable, ≤0.7 V to disable. Internal pull-up ensures default-on operation when left floating. Response time from disable to output shutdown is <100 µs, verified under transient load testing in the quick start guide.

What is the maximum continuous output current and thermal derating behavior?

The board delivers 0.8 A continuously at 5 V with ambient temperature ≤50°C and free-air convection. Above 50°C, output current must be reduced linearly to 0 A at 85°C per thermal imaging data in Rev. 1.1 Section 5 - due to SOIC-EP package limitations and lack of heatsink mounting provisions.

Is the EV6003-N-00A RoHS-compliant and lead-free?

Yes - all components, including the MP6003DN IC, WE-750313291 transformer, and passive stack, meet RoHS Directive 2011/65/EU requirements. MPS confirms full lead-free compliance on its Quality Assurance page, and board assembly uses Pb-free solder per IPC-J-STD-020D.